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Add 4/21 and 3/27

4/21 + 3/27 is 19/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 27 is 189
  2. For the 1st fraction, since 21 × 9 = 189,
    4/21 = 4 × 9/21 × 9 = 36/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    3/27 = 3 × 7/27 × 7 = 21/189
  4. Add the two fractions:
    36/189 + 21/189 = 36 + 21/189 = 57/189
  5. After reducing the fraction, the answer is 19/63

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